CPS Solenoid

CPS solenoid

Note! Some variation in the illustrations may occur, but the essential information is always correct.

Removal

Remove the CPS solenoid. Refer to: CPS solenoid, B6324S5 CPS Solenoid





The CPS (Cam Profile Switch) solenoid has four inputs/outputs: (1.) Port T, (2.) Port A (3.) Port T and (4.) Port P





A CPS solenoid does not have a built in spring. It is therefore necessary to press the valve in slightly during fault-tracing to get the solenoid to work satisfactorily during the test. Use a short M8 screw or similar.
The lack of spring also means that it may sound as if something is loose inside the solenoid if it is shaken. This is completely normal.





Press in the valve slightly.
Blow compressed air into the A port (2).
Air should come out through both return holes (1 and 3).
For further function checks, continue with "checks". If the duct appears to be blocked, go to "cleaning".





Press in the valve slightly. Connect current to the solenoid.
The solenoid should click.
It may be easier to hear the click if the solenoid is held.
Blow compressed air into the A port (2). Air should come out through the oil feed hole (4).
Note that there may be some leakage at both return holes (1 and 3).


Use: Cleaner, 1161826 (EU), 1161828 (US)

Allow the cleaner to act for 5 minutes.
Blow compressed air into all holes from both directions and look for contamination. Carry this out with current on and off to ensure that no dirt remains in the ducts.

Use: Cleaning agent, 1161721
Rinse with cleaner. Blow again.
Regrease the solenoid with engine oil to avoid sticking.
After cleaning, check the function by repeating steps 1 and 2.
If the solenoid still malfunctions after cleaning twice, replace the solenoid.

Installation

To install, reverse the removal procedure.

Erase DTCs and test drive the vehicle.
Check that no new DTCs have been stored.